The crossword solutions for the term WEEKDAY (ABBR.) are THUR (4 letters), S (1 letter), FRI (3 letters), MON (3 letters), SAT (3 letters), TUE (3 letters), WED (3 letters), and TUES (4 letters). These abbreviations refer to the days of the week, with THUR being Thursday, S being Sunday, FRI being Friday, MON being Monday, SAT being Saturday, TUE being Tuesday, WED being Wednesday, and TUES being Tuesday.